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math422jan42016.notebook Happy 2016 !! January 04, 2016 hw due Tuesday: Geometry p. 138 # 15,16,23,24,27,28 If you need to, use your notes to help you with these questions: 1. What does CPCTC stand for? 2. What are the ways to prove triangles congruent? 3. A pentagon has interior angles with measures 100, 120, 150, (14x+11) and (81x) degrees. Find x. 4. The measures of some angles are shown.Find x. x2 754x 5x A C 5. Determine if Give a reason for your answer. 62 4x2 8x10 B D math422jan42016.notebook January 04, 2016 Recall the vocabulary and 2 theorems we studied just before break: A Which angle is the vertex angle in the diagram at left? Which are the base angles? What is the base? B C If 2 sides of a triangle are congruent, then the angles opposite those sides are congruent. (Base angles of an isosceles triangle are congruent) If 2 angles of a triangle are congruent, then the sides opposite those angles are congruent. try these math422jan42016.notebook January 04, 2016 math422jan42016.notebook January 04, 2016 C Given : triangle ABC with Prove: D A B E math422jan42016.notebook C R January 04, 2016 Given : S A D B